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1. A low number of algal cells in the presence of a high number of grazers suggested，but did not prove， that the grazers had removed most of the algae. (3+)
在存在大量食草動物的同時卻只有少量的水藻花粉囊，這暗示出——但沒能證明——食草動物已吞噬了大部分水藻。
難句類型：插入語
解釋：本句主語很長，而且謂語suggested與that引導的賓語從句間被插入語but did not prove隔開，造成閱讀障礙。當suggest與but did not prove連在一起使用的時候，其意思不是建議，而是指一種基于主觀臆測的推理，中文翻譯成“暗示”。其英文釋義為：to call to mind by though or association the explosion suggested sabotage.GRE、GMAT及LSAT文章中，常用suggest，but do not prove來描述一種沒有真憑實據(jù)、可能有問題的理論，然后在后面的敘述中把它否定掉。
意群訓練：A low number of algal cells in the presence of a high number of grazers suggested，but did not prove， that the grazers had removed most of the algae.
2. Perhaps the fact many of these first studies considered only algae of a size that could be collected in a net (net phytoplankton)， a practice that overlooked the smaller phytoplankton (nannoplankton) that we now know grazers are most likely to feed on ， led to a de-emphasis of the role of grazers in subsequent research. (5)
可能這樣一個事實，那就是很多這樣的最初的研究只是考慮了那些能夠用網(wǎng)撈起來的大小的水藻，這樣一個忽視了更小的浮游生物(而這些浮游生物我們現(xiàn)在知道是捕食者主要的食物)的做法，導致了在接下來的研究中對于捕食者的作用的貶低。
難句類型：復雜修飾、插入語
解釋：句子的結(jié)構(gòu)繁雜。句子的主語令人吃驚地長，在最后一個逗號后的led以前，全是主語!其實句子的主干簡單，就是the fact led to a de-emphasis of the role of grazers.但是本句的主語the fact后面的修飾成分長得嚇人，先是個定語從句;定語從句中又套了一個定語從句。然后逗號后面的a practice引導的部分是前面的主語的同位語兼任插入語，practice后面的修飾它的一大堆東西又是定語從句套著定語從句。本句是典型的層層修飾結(jié)構(gòu)。
意群訓練：Perhaps the fact that many of these first studies considered only algae of a size that could be collected in a net(net phytoplankton)， a pratice that overlooked the smaller that we now know grazers are most likely to feed on， led to a de-emphasis of the role of grazers in subsequent research.
3. Which of the following most probably provides an appropriate analogy from human morphology for the “details” versus “constraints” distinction made in the passage in relation to human behavior? (5)
以下哪一個選項最有可能為文章中所談到的與人類行為有關的“人類行為細節(jié)”相對“人類所受限制”之間的差異，從人類形態(tài)的角度上提供了一個合適的類比?
難句類型：復雜修飾、抽象詞
解釋：本句子在所有GRE或GMAT閱讀題的題干中是最難讀懂的題干之一。本句不但結(jié)構(gòu)復雜，而且用詞抽象，使得讀者如果想根據(jù)語義來搞清楚誰修飾誰，也變得極為困難。分析如下：本句的主干是Which of the following provides an analogy for the details versus constraints distinction?。 Versus是一個介詞，等于against，即體育比賽中的VS.其他的所有成分均是一些修飾成分。其中一個對答題最重要的限制條件是from human morphology， 說明這種類比的比較雙方所比的必須是人類形態(tài)上的特征。
意群訓練：Which of the following most probably provides an appropriate analogy from human morphology for the "details" versus "constraints" distinction made in the passage in relation to human behavior?
. We know that you have a high opinion of the kind of learning taught in your colleges, and that the costs of living of our young men, while with you, would be very expensive to you.
. But you must know that different nations have different ways of looking at things, and you will therefore not be offended if our ideas of this kind of education happen not to be the same as yours.
. We are, however, not the less obliged by your kind offer, though we refuse to accept it; and, to show our grateful sense of it, if the gentlemen of Virginia will send us a dozen of their sons, we will take care of their education, teach them in all we know , and make men of them.
. In what now seems like the prehistoric times of computer history, the earth’s postwar era, there was quite a wide-spread concern that computers would take over the world from man one day.
. Already today, less than forty years later, as computers are relieving us of more and more of the routine tasks in business and in our personal lives. We are faced with a less dramatic but also less foreseen problem.
. Obviously, there would be no point in investing in a computer if you had to check all its answers, but people should also rely on their own internal computers and check the machine when they have the feeling that something has gone wrong.
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